The introduction of the new lab test for cars, known as the Worldwide Harmonised Light Vehicle Test Procedure (WLTP), will happen according to the following steps.

When will the WLTP changes take place?

The transition to WLTP will happen in phases:

WLTP will officially apply to new types of cars from September 2017. New types of cars are vehicle models that are introduced on the market for the first time.

Manufacturers may already start requesting WLTP approvals for new car types when the legislation comes into force in the European Union (no sooner than end July 2017).

WLTP will apply to all new car registrations from September 2018.

EU measures for end-of-series cars should allow for a limited number of unsold vehicles in stock that were approved under the old test (NEDC) to be sold the following year, that is until September 2019.

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